Resources

Official rulebooks and guides for every level of play.

Soccer

IFAB Laws of the Game

NCAA Soccer Rules Book

2025–26 Soccer Rules Comparison Guide ↗

Side-by-side breakdown of NCAA, NFHS, and IFAB/USSF rules across field of play, substitutions, equipment, fouls, and more.

Field of playSubstitutionsEquipmentFouls & misconductOffsideGoalkeeper rulesTerminology

Baseball

Official Baseball Rules (OBR)

Travel / Pro↗

Little League Rules & Regulations

Little League↗

Basketball

NFHS Basketball

FIBA Basketball Rules

International / FIBA↗

Not sure which rulebook applies? Include the level of play (youth, high school, college, or pro) when you describe a call and the AI will apply the right rules automatically.